#281C81#281C81

#281C81 is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.2% C 0.159 H 278.0°. Best body text is #FFFFFF at 13.35:1 contrast (WCAG AA passes).

Color values

HEX	#281C81
RGB	rgb(40, 28, 129)
HSL	hsl(247, 64%, 31%)
HSV	hsv(247, 78%, 51%)
CMYK	cmyk(69%, 78.3%, 0%, 49.4%)
CIE-LAB	lab(19.50, 37.42, -54.42)
CIE-LCH	lch(19.50, 66.05, 304.51°)
OKLab	oklab(32.24% 0.0221 -0.1572)
OKLCH	oklch(32.24% 0.159 278)
XYZ	xyz(5.2515, 2.8662, 21.0411)
Luminance	0.0287 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281C81 #75811C

analogous

#1C4281 #281C81 #5A1C81

triadic

#281C81 #81281C #1C8128

tetradic

#281C81 #811C42 #75811C #1C815A

square

#281C81 #811C42 #75811C #1C815A

split-complementary

#281C81 #815A1C #42811C

monochromatic

#09061C #18114F #281C81 #3827B3 #5342D6

Accessibility & contrast

On white

13.35

#281C81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#281C81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281C81

13.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281C81	#FFFFFF	#000000	##FFFFFF
##281C81	1.00	13.35	1.57	13.35
#FFFFFF	13.35	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003384

Deuteranopia (green-blind)

#002B7F

Tritanopia (blue-blind)

#00394D

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #281c81;
/* rgb */ color: rgb(40, 28, 129);
/* oklch */ color: oklch(32.2% 0.159 278.0);

Tailwind

colors: {
  custom: {
    50: '#705aa7',
    500: '#281c81',
    950: '#000000',
  },
}

SCSS

$custom: #281c81;
$custom-light: #705aa7;
$custom-dark: #000000;

JSON

{
  "hex": "#281c81",
  "rgb": {
    "r": 40,
    "g": 28,
    "b": 129
  },
  "hsl": {
    "h": 247.129,
    "s": 64.331,
    "l": 30.784
  },
  "oklch": {
    "l": 0.32242,
    "c": 0.15876,
    "h": 278
  },
  "luminance": 0.02867
}

Semantic roles & 50–950 ramp

primary

#281C81

secondary

#A7B444

accent

#E740D4

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #281C81

Body copy rendered with the generated semantic roles for this colour.

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